(一般作 stairs)a set of steps leading from one floor of a building to another, typically inside the building 楼梯 he came up the stairs. 他走上楼来。 ■single step in such a set 梯级 the bottom stair. 最下面一级楼梯。
语源
Old English stæger, of Germanic origin: related to Dutch steiger 'scaffolding', from a base meaning 'climb'